The BAU heads south to investigate a fast-moving UnSub whose signature matches that of a serial killer from 30 years ago. Also, the team learns that someone is tracking their cases and replicating crimes the BAU is solving

Recap

The episode begins with a girl named Floressa offering her prayers to her Lord in the woods. She then goes to collect some flowers to offer at the altar. When she returns, she finds some creepy, crawly insects on the altar. A man, the unsub arrives and calls her Paddie. She tells him that her name was Nina Skinner before she joined the church and changed it to Floressa. He then kills Floressa by driving a chisel into her brain and leaves the body with bugs around it. Grosse! At the unit, Garcia briefs the team about this gruesome act and also tells them that, two days ago, a guy named Charlie Clayton was killed in the same way. Both of the murders have some sort of religious connections. ..